Alright, let's work through 78727679 times 9814735 step by step
78727679 × 9814735 = 9814735 × (78727679)
+ 9814735 × 9 that results in 88332615
+ 9814735 × 70 yielding 687031450
+ 9814735 × 600 resulting in 5888841000
+ 9814735 × 7000 that results in 68703145000
+ 9814735 × 20000 that results in 196294700000
+ 9814735 × 700000 giving us 6870314500000
+ 9814735 × 8000000 that is equal 78517880000000
+ 9814735 × 70000000 giving us 687031450000000

= 772691306550065
